NGC 3780


NGC3780 is a spiral galaxy in the constellation of Ursa Major. Its velocity with respect to the cosmic microwave background is, which corresponds to a Hubble distance of. However, 10 non-redshift measurements give a closer mean distance of. It was discovered by German-British astronomer William Herschel on 14 April 1789.
NGC 3780 is a is a LINER galaxy, i.e. a galaxy whose nucleus has an emission spectrum characterized by broad lines of weakly ionized atoms. It also has an active galaxy nucleus, i.e. it has a compact region at the center of a galaxy that emits a significant amount of energy across the electromagnetic spectrum, with characteristics indicating that this luminosity is not produced by the stars.

NGC 3780 group

According to A. M. Garcia, NGC 3780 is the namesake of a small group of galaxies. The NGC 3780 group includes at least four galaxies, including NGC 3888, UGC 6596, and UGC 6774.

Supernovae

Three supernovae have been observed in NGC 3780:SN1978H was discovered by Swiss astronomer Paul Wild on 7 November 1978.SN1992bt was discovered by the Leuschner Observatory Supernova Search on 19 December 1992.SN2024btj was discovered by the Xingming Observatory Sky Survey on 5 February 2024.